HOMEVULNERABILITIESCVE-2022-26485
HIGHCISA KEVIN THE WILD

CVE-2022-26485

Published: March 7, 2022

EPSS:7.07%probability of exploitation in 30 daysPercentile:91.3th

Official Description

Mozilla Firefox contains a use-after-free vulnerability in XSLT parameter processing which can be exploited to perform arbitrary code execution.

NVD Source

CISA KEV Advisory

Mozilla Firefox Use-After-Free Vulnerability

Mozilla Firefox contains a use-after-free vulnerability in XSLT parameter processing which can be exploited to perform arbitrary code execution.

Added to KEV: 2022-03-07Federal patch deadline: 2022-03-21
Required Action (CISA)

Apply updates per vendor instructions.

Technical Analysis

CVE-2022-26485 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2022-26485 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):
Mozilla
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (1)

Quick Facts

CVE IDCVE-2022-26485
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)7.07%
PublishedMar 7, 2022

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2022-26485 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.